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Experimental Investigations on Particle Number Emissions from GDI Engines.
Annotation
| Clasificación: | Libro Electrónico |
|---|---|
| Autor principal: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
Berlin :
Logos Verlag Berlin,
2016.
|
| Colección: | Forschungsberichte Aus Dem Institut Für Kolbenmaschinen Ser.
|
| Temas: | |
| Acceso en línea: | Texto completo |
MARC
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| 100 | 1 | |a Bertsch, Markus. | |
| 245 | 1 | 0 | |a Experimental Investigations on Particle Number Emissions from GDI Engines. |
| 260 | |a Berlin : |b Logos Verlag Berlin, |c 2016. | ||
| 300 | |a 1 online resource (170 pages). | ||
| 336 | |a text |b txt |2 rdacontent | ||
| 337 | |a computer |b c |2 rdamedia | ||
| 338 | |a online resource |b cr |2 rdacarrier | ||
| 490 | 1 | |a Forschungsberichte Aus Dem Institut Für Kolbenmaschinen Ser. ; |v v. 2/2016 | |
| 588 | 0 | |a Print version record. | |
| 505 | 0 | |a Intro; 1 Introduction; 2 Fundamentals on particle emissions from GDI engines; 2.1 Combustion generated particles; 2.2 Soot formation; 2.3 Particle number measurement; 2.4 Sources of PN emissions in GDI engines -- Scientific knowledge; 2.4.1 Mechanism of PN formation; 2.4.2 Mixture formation in GDI engines; 2.4.3 Inflammation in GDI engines; 2.4.4 Tip-Sooting; 2.4.5 Exhaust gas recirculation; 2.4.6 Fuel-composition; 3 Experimental setup; 3.1 Test bench setup; 3.2 Engine data; 3.2.1 Ignition systems; 3.2.2 Fuel properties and injector specifications; 3.3 Numerical analysis. | |
| 505 | 8 | |a 3.4 Optical diagnostics3.4.1 Mie-scattering; 3.4.2 Radiation of flames; 3.4.3 Adaption of the high-speed measurement equipment; 3.4.4 Spark plug with fibre optical access -- post-processing; 3.5 Particle Image Velocimetry; 3.5.1 Setup PIV; 3.5.2 Particles used for PIV; 3.5.3 Post-processing PIV; 3.6 Pressure chamber; 4 Pressure chamber results; 4.1 Injector characterisation in the pressure chamber; 4.2 Spray penetration and break-up as a function of hydraulic flow and injection pressure; 4.3 Initial penetration velocity as a function of hydraulic flow and injection pressure. | |
| 505 | 8 | |a 4.4 Changes of temperature and pressure in the chamber5 Engine results; 5.1 Influence of large scale charge motion; 5.1.1 Large scale charge motion using inlays; 5.1.2 Large scale charge motion and early intake closing; 5.2 Variation of air-fuel-ratio; 5.3 Influence of residual gas concentration; 5.4 Effect of external, high pressure EGR on PN emissions; 5.4.1 Influence of EGR cooling; 5.4.2 EGR and charge motion; 5.5 Influence of injector static flow and injection pressure; 5.5.1 Influence of injector static flow at low engine load; 5.5.2 Influence of injector static flow at WOT operation. | |
| 505 | 8 | |a 5.5.3 Influence of injector static flow at boosted operation5.5.4 Influence of injection pressure at boosted operation; 5.6 Influence of fuel composition and fuel temperature on PN formation; 5.6.1 Fuel temperature; 5.6.2 Fuel composition; 5.7 Influence of lubricant and coolant temperature on PN formation; 5.7.1 Engine lubricant temperature; 5.7.2 Engine coolant temperature; 5.8 Inflammation and PN formation; 6 Summary and conclusions. | |
| 520 | 8 | |a Annotation |b This thesis discusses experimental investigations to reduce particle number emissions from gasoline engines with direct injection. Measures on a single cylinder research engine with combined usage of a particle number measurement system, a particle size distribution measurement system as well as optical diagnostics and thermodynamic analysis enable an in-depth assessment of particle formation and oxidation. Therefore, numerous optical diagnostic techniques for spray visualisation (Mie-scattering, High-Speed PIV) and soot detection (High-Speed-Imaging, Fiber optical diagnostics) are deployed. Two injectors with different hydraulic flows but identical spray-targeting are characterised and compared by measurements in a pressurised chamber. The operation at higher engine load and low engine speed is in the focus of the experimental work at the engine test bench. Thereby, the low flow velocities in the combustion chamber, caused by the low engine speed, as well as the large amount of fuel injected are major challenges for the mixture formation process. A substantial part of the thesis thus focusses on the detailed analysis of the mixture formation process, which is consisting of fuel injection, interaction of the in-cylinder charge motion with the fuel injected and the fuel properties. Measures for the optimisation of the mixture formation process and the minimisation of the particle number emissions are analysed and evaluated. The charge motion is manipulated by the impression of a directed flow, the variation of the valve timings and valve open curve. The injection process is influenced by a reduction of the hydraulic flow of the injector and an increase of the injection pressure up to 50 MPa. The investigations show fundamental effects and potentials of different variation parameters concerning their emissions reduction potential at the exemplary operation at high engine load. Due to the simultaneous analysis of the in-cylinder charge motion and a thermodynamic analysis, the results can be transferred to different engines. | |
| 590 | |a ProQuest Ebook Central |b Ebook Central Academic Complete | ||
| 650 | 0 | |a Engines |x Design and construction. | |
| 650 | 7 | |a Engines |x Design and construction |2 fast | |
| 776 | 0 | 8 | |i Print version: |a Bertsch, Markus. |t Experimental Investigations on Particle Number Emissions from GDI Engines. |d Berlin : Logos Verlag Berlin, ©2016 |z 9783832544034 |
| 830 | 0 | |a Forschungsberichte Aus Dem Institut Für Kolbenmaschinen Ser. | |
| 856 | 4 | 0 | |u https://ebookcentral.uam.elogim.com/lib/uam-ebooks/detail.action?docID=5216257 |z Texto completo |
| 938 | |a ProQuest Ebook Central |b EBLB |n EBL5216257 | ||
| 938 | |a YBP Library Services |b YANK |n 15139387 | ||
| 994 | |a 92 |b IZTAP | ||